Removable head for metal containers and sealing means therefor



P L. B. WACKMAN 2,055,243

REMOVABLE HEAD FOR METAL CONTAINERS AND SEALING MEANS THEREFOR Filed Dec. 26, 1933 f'l'fl l f: Q I 19 2 7% /6 4 Ira/6131 02 .v jaazsfiilflwfzzara,

WWW

Patented Sept. 22, 1936 UNITED STATES PATENT OFFICE- REMOVABLE HEAD FOR METAL CONTAIN- ERS AND SEALING MEANS THEREFOR 2 Claims.

This invention has for its primary object to provide a container or drum having a full opening chime and including a removable head having securing means for effecting a fluid tight joint between the head and the container chime, which is capable of resisting rough usage.

Another object of the invention is in providing an improved contractible channel shaped securing band for embracing the sealing margin of the head and the chime of a container, for insuring a fluid tight connection between the head and the container.

A further object of the invention is in providing the securing band with an improved cooperable mechanism for contracting and expanding the band.

A still further object of the invention is in providing the head of a container or drum with an improved head securing and locking device which forms part of the container or drum, the device being provided with a lever type actuating mechanism, which when in a locking position, is folded in a manner to present a self-reenforced structure against being damaged by abutting forces.

Still another object of the inventionis in providing a split securing and locking band for the heads of containers having a contracting and expanding mechanism connected to one end of the band, and the mechanism being detachably connected to the other end of the band for permitting spreading of the band.

Another still further object of the invention is in providing an operating mechanism for a split locking band which is adapted to be contractibly secured over the chime and head of a container, with actuating means which is operated for contracting the band, by a downward pressure against the head.

It is also an object of the invention to provide a container head of an improved construction for holding the head gasket in a position for improved sealing cooperation with the container chime.

Other and further objects will appear in the specification and be specifically pointed out in the appended claims, reference being had to the accompanying drawing, exemplifying the invention, and in which:-

Figure 1 is a plan view of a container showing an embodiment of the invention secured on the head of a container for securing and locking the head in sealed position.

Figure 2 is a plan view of the securing and locking band in an expanded position.

Figure 3 is an enlarged vertical section of the upper end of the container and head, taken on the line III-III of Fig. 1.

Figure 4 is an enlarged transverse vertical section taken through the securing and locking band showing the actuating mechanism in a position for either releasing or contracting the band.

Figure 5 is an enlarged fragmentary vertical section taken approximately on the line V-V of Fig. 3.

Figure 6 is an enlarged fragmentary vertical section taken approximately on the line VI-VI of Fig. 1.

Figure '7 is an enlarged fragmentary vertical section of the seating portion of the head.

Referring by numerals to the accompanying a drawing, l designates a container or drum having a vertical wall 2 and the upper end of the wall being provided with a rolled portion forming a bead 3 which provides the chime of the container.

For cooperation with the container chime, is a counter-sunk head 4 having an annular vertical wall 5 with a surrounding horizontally extending marginal flange 6 on its upper end, the wall 5 beneath the flange 6 having an annular groove 1 formed in its periphery for the reception of the relatively soft sealing gasket.

When a container is filled for shipment and the head 4 is mounted on the chime, the gasket 8 will rest inwardly on the bead 3, by reason of the disposition of the supporting groove 1 of the gasket, and in order to secure the head in seal tight position against the container chime, it is essential to provide adaptable retaining means, and to this end, the split lockingband 9, is provided.

The locking band 9 is of a channel shape in cross section for providing a rounded groove, the ends [I] and H of the band, each having a horizontal portion I2 extending from the top side of the band, and depending from each extending portion is a part I3 which is of a length to engage the counter-sunk portion 4a of the head 4 when the band 9 is mounted over the marginal flange 6 of the head. Each depending part l3 at its lower end, is outwardly and upwardly extended for providing a projection l4.

Mounted in straddling relation over the projection [4 of the end H of the band 9, are the ends of a. pair of links I 5, said links being swingably secured to said projection M by the pin l6, said pin being passed through said links, the projection l4 and the depending part l3. Secured between the opposite-ends of said links by the pin or rivet I1, is a lever l8 having a hook-nose shaped end l9 which is adapted to be engaged in a levering recess 20 which is formed in an edge or end of the projection M of the end IU of the band 9, the opposite end of the lever l8 being the hand-engaging end 2| thereof.

In mounting the securing band 9 over the flange 6 of the head 4 and the bead 3 of the container chime, the lever i8 and the links l5 connected therewith, are swung to the position shown in Fig. 2 and in dotted lines in Fig. 4. This released position of the lever 58 provides for the band 9 to be expanded by reason of the split thereof so that the band can be aptly and readily mounted in position over the marginal flange of the head and the bead of the chime, and as securing bands of this character will be made in different sizes to accommodate difierent diametered containers, after the band has been mounted in position as just described, the projections H3 of respective ends to and ii of the band will be at proper distances apart and in alinement for cooperation with the spaced links I5 so that when the lever 58 is swung to the approximate position shown in full lines in Fig. 4, the links I5 will straddle the projection M of the band end l9, and in this position of engagement of the links, the hook of the nose it will overlie the pointed end 22 of the projection id for securing the hook-nose end is of the lever in engaging .position so that when the lever i8 is swung upwardly from its position in full lines in Fig. 4, there will be a drawing action given to the links l5, and consequently to both band ends l8 and H, as the hook-nose end 59 rides and rolls into the recess 20 of the projection i4.

To complete the drawing action on the band ends IE1 and H, the lever I8 is swung downwardly to a horizontal position, and as the handle end of the lever is curved in conformity to the curvature of the band, as shown in Fig. 1, the handle end 2! will be engaged between a pair of spaced portions 23 of a bracket 25 which is extended from the band 9.

The engagement of the handle end of the lever between the spaced portions 23 of the bracket 24 provides for securing the lever against unauthorized operation by passing a sealing wire 25 through an opening 26 formed in the outer portion 23 of the bracket and an opening 2'! formed in the lever, the ends of the sealing wire, then being secured by the fastening or sealing element 28.

By reason of the contracting mechanism of the band 9 (lever l3 and links l5) being connected to the band 9 at right-angles thereto, it is obvious that the actuating efiort to contract the band will be on the band, and consequently against the marginal flange 6 of the head 4, this actuating efiort being in a proper direction for forcing the band downwardly over the bead 3 of the container chime, thereby assisting the creeping or drawing action required in contracting or drawing the band in securing position.

As containers and drums of this character are subjected to rough usage, and as the securing band 9 and its operating mechanism form part of the container, it is clear that when the operating mechanism is folded in locked position in the supports provided by the projections l4 and the bracket 24, that the operating mechanism presents an end or edge projection, against being damaged by any abutting blow or force.

The band 9 is removed from its securing position over the container chime and head, by breaking the sealing wire 25 and then swinging the handle [8 upwardly to the position shown in full lines in Fig. 4, and then by carrying the handle further by swinging the links on the pin I6, to the dotted line position.

The disposing of the gasket 8 at a point beneath the marginal flange 6 of the head 4 in the groove 1, provides for the gasket being seated inwardly on the bead 3 rather than on top of the bead. This inward seating of the gasket on the bead will provide a better sealing joint, as the downward pressing of the head occasioned by the contracting band 9, will wipe and wedge the gasket against the inside of the bead.

Obviously constructional modifications of the device are possible without departing from the spirit of the present invention and therefore it is to be understood that it is not necessary to limit the invention by the terms used in the foregoing description, excepting such as the state of the art may require.

What I claim is:

l. The combination with a metallic container having an annular projection on its open end and a removable head for the open end of said container having a marginal flange fitting over the projection, of a clamping device comprising a channel-shaped ban-d embracing said annular projection and said head flange, said band being transversely split to provide ends therefor, said band at each end having a projecting portion thereon, a pair of links having permanent pivotal connection at one end with the projecting portion on one end of the band and disposed in straddling relation thereto, and a lever having a nosed end pivotally secured between the opposite ends of said links and adapted to have co operable connection with the projecting portion on the other end of said band, the straddling of the links with the projecting portion to which they are pivoted, serving to guide the nosed end of the lever into cooperable relation therewith.

2. The combination with a metallic container having an annular projection on its open end and a removable head for the open end of said container having a marginal flange fitting over the projection, of a clamping device comprising a channel-shaped band embracing said annular projection and said head flange, said band being transversely split to provide ends therefor, said band at each end having a right angularly disposed projecting portion thereon, a pair of links pivotally connected at one end in straddling relation to the right angular projecting portion on one end of the band, and a lever having a nosed end pivotally secured between the opposite ends of said links and adapted to have cooperable connection with the right angular projecting portion on the other end of said band, and said links adapted to straddle said last mentioned projecting portion for guiding the nosed end of the lever into cooperable relation therewith.

LOUIS B. WACKMAN. 

